Shoe-finishing machine



Dec. 4, 1923. 1,476,195 I s. A. DOBYNE SHOE FINISHING; MACHINE Filed Aug. 1, 1921 draw/5w A 00a lvs,

aha fl Patented Dec. 4, 1923.

UNETED STATES PATENT GFFICE.

STEPHEN A. DOBYNE, G13 ST. LOUIS, MISSOURI, ASSIGITOB TO CHAMPION SHOE MIA- CHINERY COMPANY, OF LQUIS, MISSQUEI, A CORPOBATIGN O1 MISSOURI.

sHon-rrnisnrne .MACHINE.

Application filed August 1, 1921. Serial No. 488,897.

To all whom it may concern:

Be it known that I, fi'rnrrrniv A. DoBYNn, a citizen of the United States, and residing at St. Louis, Missouri, have invented the new and useful Improvement in Shoe-Finishing 1V achines, of which the following a specification.

This invention relates to finishing machines, and more particularly to machines adapted for the finishing of the soles of shoes. In the finishing of shoes, more particularly the bottoms and edges of the soles and heels, a sanding roll is used. The sanding of the leather, however, produces considerable dust and this dust is objectionable in that it not only collects around the establishment, rendering the same unsanitary and causing danger of fire, but the flying particles cause discomfort and even endan ger the health of the operator. The provision of a casing for the finishing element and exhaust means applied thereto does catch considerable of the dust, but by no means all of it or even a large part of it. This is because the sanding roll must necessarily be exposed to permit contact by the shoe; moreover the required high speed causes the particles of dust to be thrown tangentially of the point of contact. Accordingly since during the operation of finishing a shoe sole, for instance, the point of contact moves progressively downward from near the top to near the bottom of the rapidly revolving finishing element, the casing cannot be constructed as to catch all of the dust.

One of the objects of this invention is to provide a finishing machine in which the dust will be caught without interfering with the operation of the finishing element.

Further objects will appear from the detail description taken in connection with the accompanying drawing, in which:

Figure 1 is a side elevation, partly in section, of a machine embodying this invention;

-Figure 2 is a front elevation; and

Figures 3 and 4 are diagrams showing the operation. 4

Referring to the accompanying drawin 1 designates a drive shaft which is mounted in a frame (not shown) and receives power in any suitable manner which is usual in machine constructions. This shaft supports the finishing element or roll 2 which as usual has a covering of sand pa er or Other abrading or finishing means. ounted on a cross-bar 4 also carried by the frame is a casing 5 which has a neck 6 connecting with a suitable pipe 7, in turn connected with an exhaust fan (not shown). The casing has a section 8 pivoted thereon at 9 so that by swinging back the section 8, the roll will be exposed to permit removal or replacement of the finishing covering for the roll. The exhaust fan will cause a draft through the casing, the purpose of which is to carry with it the dust thrown off by the sanding roll.

Mounted below the sanding roll is a dustreceiving trough or element 10 which is mounted on a carrier 11 by a hinge or pivot 12 extendin along the roll and a spring 13 operates to retain the element 10 in normal position as shown in Figure 1. This spring, however, permit downward movement of the element against its tension; The carrier is pivoted to the casing by a pivot 14 transverse to the finishing element and about midway between the ends of the e1ement 10. The carrier 11 and the element thereon are, therefore, mounted for edgewise movement on a transverse axis and underneath the finishing element. Springs 15 connecting the ends of the carrier with the casing operate to normally retain the car rier and the element thereon in a position where the edge of the element is substantially parallel to the finishing element. However, when pressure is applied to the element 10 at either side of its center, the element and the carrier thereon will be moved about the axis 14 so as to recede with respect to the roll 2. As soon, however, as this pressure is relieved, the carrierand its element will be restored to normal position. The element 10 operates as a dust-receiving and directing element to direct the dust thrown off by the roll into the casing. For this purpose the projection of the element 10 is sufficient to catch the tangentially thrown particles of dust. It is to be under- Stood, of course, that a suitable stop is provided between the element 10 and its carrier 11 to arrest the upward movement of the element in the position shown in Figure 1.

In finishing the bottom of a shoe sole, as shown in Figure 3, the sole is moved downunderneath the finishing roll.

wardly along the finishing roll, beginning at the toe and terminating in the shank. In the actual operation the toe part is placed against the sanding roll a little above the shaft and the sole is moved down at the same time tripping the toe towards the easing. As the toe reaches the position'shown in Figure 3, it will engage the element 10 and move itdownwardly out of the way against the tension of its spring. When the operation is started near the upper part of the roll, the element 10 will catch the parti cles of tangentially movingdust and direct the same into the casing. As, however, the element 10 is moved out of theway, the point of contact will also move down, so that the element 10 will. always be in the path of the dust particles in order to catch the same and direct them into the casing. As soon as pressure on the element 10 is released, it will move back to normal position.

In the finishing of a heel bottom, the operation is in a general way sim lar to that in finishing a sole bottom. In such case the back or side of the heel will engage the element and move it out or the way.

In the finishing of the sole edge, the norator will generally use either end 0 the roll, bearing the sole edge against the edge of the roll in order to prevent damage to the upper. In thus finishing the sole ed e, the procedure is to start near the toe and more the shoe downwardly at the same time mor ing it inwardly as the shank is reached. During this movement the sole edge will press against the element 10 near its end and cause it to swing with its carrier about the pivot 14 and recede to a position out of the way Fere also the point of contact moves down along the roll, and although the directing element is also moved, it is only moved in accordan e with the movement of the shoe so that it will always catch the dust particles.

It will, therefore, be seen that the, invention accomplishes its objects. The derice so constructed as to expose the roll in or not to interfere with the rapid o aeration essential in the finishing of shoes. The pro vision of the directing element, however, in sures the collection of all of the dust, so that the same will be carried into the casing and not thrown out into the room. This element does not, however, interfere with the operation and does not obstruct the operator at all. If, as sometimes happens, dust should collect on the element 10, then this dust can readily be discarded by simply moving the element down and allowing it to fiy back, when the dust will be thrown into the casing to be carried off by the draft.

It is obvious that various changes may be made in details of construction without departing from the spirit of this invention; it is, therefore, to be understood that this in vention is not to be limited to the specific details shown and described.

Having thus described the invention, what is claimed is:

.1. In a shoe finishing machine, the combination with an elongated rotary finishing tool and its dust hood, of a supplemental dust catching trough extending along and projecting beyond said tool, said trough being mounted for movement to yield at either end on contact by the work therewith, and means for returning said trough to normal position. 7

2. In a shoe finishing machine, the combination with a rotary finishing tool and its dust hood, of a supplemental dust catching trough extending along and projecting beyond said tool, said trough being mounted to recede edgewise.

3. In a shoe finishing machine, the combination with a rotary finishing tool, and its dust hood, of a supplemental dust catching trough extending along and projecting beyond said tool, said trough being mounted to recede edgewise or radially away from said tool.

4. A shoe finishing machine, comprising, a finishing roll, a dust-receiving element, and means for mounting said element for movement transversely of said roll.

5. A shoe finishing machine, comprisin a finishing roll, a dust-receiving element, and means for mounting said element for movement radially away from or tangentially of said roll.

6. A shoe finishing machine, comprising, a finishing roll, a dust-receiving element beneath said roll, and means for mounting said element for movement transversely of and underneath said roll.

7. A shoe finishing machine, Comprising, a finishing roll, a dust-receiving element, and means for mounting said element for movement so as to recede at either end.

8. A shoe finishing machine, comprising a finishing roll, a dust-receiving element, and means for mounting said element for movement about an axis transversely of said roll.

9. A shoe finishing machine, comprising, a finishing roll, a dust-receiving element, and means for mounting said element "for movement about axes along and transversely of said roll.

In testimony whereof I afiix my signature this 21st day of July, 1921.

STEPHEN A. DOBYNE. 

